Diana Dalziel Vreeland (July 29, 1906, Paris, France - August 22, 1989) is a noted columnist and editor in the field of fashion. Diana Vreeland was born Diana Dalziel, the daughter of British father, Frederick Young Dalziel (d. 1960), and an American mother who was a descendant of George Washington's brother.

Diana's family came to the United States of America at the outbreak of World War I, and moved to 15 East 77th Street in New York, quickly becoming prominent members of New York society. On March 1, 1924, she married Thomas Reed Vreeland at St. Thomas's church in New York. After their honeymoon, they moved to Albany, New York and raised their two sons, staying there until 1928. They then moved to Hanover Terace, Regents Park, London. She was presented to the King and Queen of the United Kingdom in Buckingham Palace on May 18, 1933. In 1937, her husband's job brought them back to New York, where they lived for the remainder of their lives.

Her fashion career began in 1937 as columnist for Harper's Bazaar. Joined Vogue in 1962, where she was editor-in-chief until 1971. Her husband died in 1967. She became consultant to the Costume Institute of the Metropolitan Museum of Art in New York in 1971.